Continuous casting crystallizer copper plate design method for improving electromagnetic stirring efficiency

Abstract

The invention provides a continuous casting crystallizer copper plate design method for improving electromagnetic stirring efficiency, and belongs to the technical field of copper plate design. The method comprises the following steps: determining the thickness of an insulating layer through a continuous casting solidification heat transfer model, and determining the position of the insulating layer through an electromagnetic field model, thereby arranging the insulating layer in a traditional continuous casting crystallizer copper plate, so that the eddy intensity of the copper plate under the crystallizer electromagnetic stirring condition is reduced, and the shielding effect of the crystallizer on an alternating magnetic field is reduced. The penetrating power of the alternating magnetic field is improved, and the power consumption is reduced; electromagnetic stirring efficiency of the crystallizer is improved, and superheat of molten steel is quickly dissipated; the isometric crystal rate of a continuous casting blank is increased, and the center segregation defect of the casting blank is reduced. The method is simple and easy to implement and remarkable in effect.

Description

technical field [0001] The invention relates to the technical field of copper plate design, in particular to a copper plate design method for a continuous casting crystallizer that improves the efficiency of electromagnetic stirring. Background technique [0002] During the continuous casting production process, the high-temperature molten steel in the tundish is immersed into the crystallizer through the submerged nozzle. Under the cooling effect of the copper plate, the surface temperature of the continuous casting slab decreases rapidly, and the crystal grains start to nucleate, and gradually grow from the surface to the core in the form of columnar crystals. The continuous casting slab in the middle and lower part of the crystallizer forms a shell with a certain thickness, and enters the secondary cooling zone under the action of the tension leveler. Under the condition of water mist cooling, the surface temperature of the slab gradually decreases, and the overheating of...

AI Technical Summary

Problems solved by technology

During the electromagnetic stirring process of the crystallizer, due to the high conductivity of the copper plate, the magnetic field shielding effect is great, the alternating magnetic field generated by the electromagnetic stirrer cannot completely penetrate the copper plate, resulting in a large amount of energy loss, and the efficiency of electromagnetic stirring is generally low

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